all for tank commander ...

– ISU-130 is a tank destroyer intended as a reward for moderators (Russian ones that is, likely anyway) – STA-2 and AMX-13/57 seem to be regular premium vehicles (STA-2 definitely is, AMX-13/57 not clear) – AMX CDC is insanely fun on supertest (as you can imagine), but is is actually not clear whether this is a real premium vehicle, or some sort of reward tank, not even to supertesters.